Get expert advice and insights on any topic with IDNLearn.com. Discover prompt and accurate answers from our community of experienced professionals.

A spectrophotometer measures the transmittance or the absorbance, or both, of a particular wavelength of light after it has passed through a liquid sample. The liquid sample holder is commonly known as a cuvette. Before the transmittance or absorbance of the sample is measured, a cuvette filled only with solvent, called the blank, is placed in the spectrophotometer.